Which one of the following orbitals is degenerate with (has the same energy as) 5py in a many-electron atom?
a. 5s
b. 5px
c. 4py
d. 5dxy
For the electronic transition from n = 3 to n = 8 in the hydrogen atom, calculate the energy.
1 Answer
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the only orbital that is degenerate with a 5P is another 5P
your answer is b. 5px
I really like this link for the equation, for it has a chart to give you the values for (1/n)^2
http://mooni.fccj.org/~ethall/rydberg/rydberg.htm
the equation :
wavelength = 91 nm / [(1/n)^2 - (1/n*)^2]
wavelength = 91 / [(1/3)^2 - (1/8)^2]
wavelength = 91 / [(0.111) - (0.0156)]
wavelength = 91 / [0.0954] = 954 nm
energy = (plank's constant "k") (speed of light "c") / wavelength
E= (6.626e-34)(3.00 e8 metres per sec) / 954 e-9 metres
E = 2.08 e-19 Joules per electron that does the fall